How much do the factory 15" rims wheigh? Surely they're lighter than the Iroc rims. Aren't they aluminum?

What's the backspacing on the back ones?
What's the width of them?

I put this on this board b/c I figured the drag racers would more likely know.

 

All i know is that they are aluminum.

 

I'm ASSuming you mean 16's as stock iroc rims. The 16's are 8" wide with 4.5" of backspacing in the front and 5" in the back. The 15's are 7" wide and have 4.5" of backspacing on all four wheels. They might weigh slightly less than the 16's but the extra rubber you'll have to run in order to keep the same hight will offset the weight reduction.

 

hell yeah,....
that's what I needed to know.

appreciate it.